The "Western world" taken as consisting of Europe, North America and Australia-New Zealand remains predominantly Christian: 78.5% in the USA (2002),[1] 77% in Canada (2001), close to 76.2% in Europe (2010) [2] (includes 35% of Europeans who are Eastern Orthodox especially in Eastern Europe, not properly part of "Western religion", 46% of Europeans are Roman Catholic, 18% of Europeans are Protestant)[3] and 64% in Australia (2006).

There remains a minority of the order of 5% of the population in the Western world which adheres to non-Western religions, mostly due to recent immigration, but to some extent also due to proselytization, notably conversion to various sects of Buddhism and Hinduism in the context of the New Age movement in the later part of the 20th century.